interface Obj {
    [name:number]: string
}
let obj:Obj = {
    0: "0",
    1: "a",
    2: "b",
    3: "c",
    4: "d"
}

interface Obj1 {
    [name:string]: number
    angular:number,
}
let obj2:Obj1 = {
    "html": 0,
    "css": 1,
    "js": 2,
    "Vue": 3,
    "ts": 4,
    "angular": 5
}